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SST AVAILABLE COF* H. A.-FO0THORAP.

WRITING ADDING MACHINE.

APPLICATION FILED NOY|4| I9I2. l 1,421,201 Patented June 27, 1922.

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APPLICATION FILED NOV.4. 1912.

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WRITING ADDING MACHINE.

APPLICATION FILED NOV.4, i912.

` Patented June 27, 1922.

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. WRITING ADDING MACHINE.

APPLICATION FILED NOVJII 1912, Y 1,421,201.V Patented June 27, 1922.

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H. A. FOOTHORAP. wRmNG AnnlNG MACHINE.

APPLICATION FILED NOV. 4, `19I2. 1,421,201. Patented June 27, 1922.

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H. A. FOOTHORAP.

WRITING ADDING MACHINE.

APPLICATION FIIED Nov.4, 19142.

BEST AVAILABLE CCIP;

H. A. FOOTHORAP.

WRITING ADDING MACHINE.

APPLICATION FILED Nov. 4, I9I2.

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WRITING ADDING MACHINE.

yAPPLICATION FILED Nov.4,1912.

1,421 ,201. Patented June 27, 1922.

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1,421g2o1; A

APPLICATION FILED NOV-4,19I2.

Patented June 27, 1922.

Il SHEETS-SHEET 9.

@III Imm [NI/ENTOR) H. A. FOOTHORAP.

wmrms ADDING MACHINE. APFUCATlON FlLED NOV- 4, 1.912. 1,421,201 Patented June 27, 1922..

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WRITING ADDING MACHINE.

APPLlc/ITION FILED Hov. 4, 1912.

1,421,201 Patented June 27, 1922.

I I SHEETS-SHEET I I.

BST AVALBLE @C2331 lUNITED STATES PATENT OFFICE.

FISHER COMPANY, OP HARRISBURG, PENNSYLVANIA, A CORPORATION OF DELA- VARE.

Tc (1.727 iii/tom it may/cof/zcern:

Be it known that l. llfuuivfi. Foo'ruonfir, a citizen ot the Unit-ed States ot America'. residing` at Harrisburg. in the county ot Dauphin and State ot' Pennsylvania. have invented certain new and usetul Improvements in lVriting-Adding Machines, ot which the tollowing is a specitication.

My present invention relates to writing adding machines. the. illustrated embodiment thereof being a combined typewriting and adding machine. ot that class' characterized by adding mechanism under the control ot the numeral keys ot the' typewriter. i A

One of the objects ot the invention is to equip a machine ot this character with computing mechanism adapted to he operative for both adding and subtracting operations as the machine records in different column positions or fields whereby. atter the record is made. the positive or nega-tive excess ot' the values printed in different fields will be registered` l 1 Another objectis to equip a machine ol: this character with adding registers appropriated to several columns. a grand totalizer tor computing the grand total ot the values accumulated b v the column registers and means whereby. when the grand total is printed. the grand totalizcr will be automatically cleared.

Still another object ot' the invention is to provide the marhinil with column registers, a grand totalixer and a total register. together with automatic means controlling the ii'haracter ol' operation ul' the grand totalif/er so that as column totals are accumulated by the column registers. the grand total ot the column totals will he accumulated by the totalizer and whereby. when the grand total is written` this amount will be registered by a grand `total register and the grand totalizer simultaneously cleared to prove the work Awithout destroying the registration ot the grand total.

Various other objects subordinate to those enumerated willfappear as the succeeding description oi' the illustrated embodiment ot the invention is developed.

ln the accompanying drawings Figure l is a plan view of an Elliott- Fisher billing machine equipped in accordance with my invention. certain parts being broken away to facilitate the disclosure and WRITING-ADDING MACHIN.

Application tiled November 4` 1912. Serial'No. 729,383;

Specification of Letters Patent. i. Patentedk 2.7,

certain well known parts being entirely omitted. n

Figure 2 is a vertical'sectional view' of the subject-matter of Figure l'showing certain of the parts vinelevationyothers broken away and still others omitte i Figure 3 isa rear elevation of a portion olt the machine showing'rnore particularly those elements of the mast'erwheel advancing mechanism and master wheel reversing mechanism which-areimounted on the carriage. i l

Figure 4 is a plan view ofinost of the parts shown in Figure 3. n

Figure 5 isa detail sectional view on the line '5 5 of FigureB, showing the-A mounting of the retarding arm 9() on 'the lower rack. j '5f-'1' Figure 6 is a. detail sectionalview through the retracting drum andla'dj'ac'ent :parts of the master wheel advancing mechanism.

Figure 7 is a rear elevation of a portion of the machine designed more particularly to show the relation of the'retarding stops and subtracting cam to the adjacent elements of the master wheel advancingand reversingr mechanism. i

Figure 8 isa view similar to Figure 7 with certain ot the parts omitted but showing in addition the principal elements of the transler restoring mechanism.

Figure 9 is a detail view showing the retarding arm cammed out of engagement With the retarding stop. Y

Figure l0 is a view showing more particularly the sliding contacts of the restoring mechanism.

Figure l1 is a diagrammatic View of the electric i'zontrolling and operating means for the transfer restoring mechanism of the twovav register.

Figure l2 is a detail view of the master wheel reversing mechanism or so much thereof asis necessary to illustrate the manner in which the retract-ion cam on the frame causes the shitting of the reversing lever.

Figure 13 is a plan View partly in section of the gear case and the variable gearing therein. said gearing being organized for subtraction.

Y Figure 14 is a sect-ion on the line llt-14 of Figure 13, the variable gearing-being shown in elevation.

Figure 15 is a sectional view of the grand totalizer or tWo-way register,'the parts-being shown in normal position and the operated positionof carryingy device or' one set beineindi'cated' inldottedjlines.

"`"\zi'gure1t`is'a similiar view with a carrying device of one set in operative position.

Figure 17 is a detail view of one of the re storing slides showing the manner of its f fi- Figure 18 is a sectional elevationof'so muchc of the two-way register mechanism as is necessary te show'the depression of a restorr suitable intermediate connections 8.

ing slide to restore an operated carrying device,A and. to .bring said slide into* engagement with` an operative trip or latch; preparatory to .therestoration thereof.

Figure 19 is aviewsimilarz-.to Figure-16 but; showing the restoring slide tull-y de* pressed; and` the operated. carryingdevice andlatch'fullyrestored. f Figure 20Jis afront elevation of a twoway register with: casingin sections-and Figure 21 is a detail section on line 21-21 oi Figure 1.5.

The Hiott-Fisher. .Billing Mach/ine.

,The machine illustrated; herein is. the Elliott-.Fisher billingmachine; of commerce,v a more complete disclosure of which mayl be had` by referenceto. Patents #573,868 to Robertd. Fisher, and #829.971 to Laganke and Smith, and the accompanying'.application ot. Laganke and Smith.. Serial No. 3058.279.

Hille, lfllliottfFisherv billing machine embracesa fiat platen typewriter having a main frame 1 whichI travels:longitudinally oi' a dat platen Q on tracks or guides 3. to: line space the-writing. .Onv the-frame 1 travelsitransuersely oli the; platen,l Jr'or letter. spacing.. a carriage 4 supporting the traveling printing or recording mechanism 5. usually in the form. otra. series of type arms carrying suitabletypes Gand operative by keys? through The carriage L1 is propelled to the right for letter spacing by carriage propelling me:hanism in the form ot' spring drums 9 connected tothe carriage by tapes 10. and the usual.- escapement.mechanism.. a showing ot which is not necessary to this disclosure. is provided to place the carriage under the control. of the keys.

Im addition to the elementsrei'erred: to. the machine. is also equipped as usual with the ordinary appertinent requisite mechanisms, of a typewriter..as for instance. ribbonmechanism.. carriage release mechanism. tab-ulating mechanism. etc.

In rearofthe carriage 4 is supported, as usual, by the frame 1. a register supporting bar- 11 disposed parallel; withl the carriage withl adjustable supporting brackets 12 interposed between the bar and what are knnwn as' the` rear. brackets. 13 of the ma- 11. y Carried by the bar 11 and adjustable `thereon to any desired column positions,v are whatare knowfnfascolumn registers 15. 'These registers are of well known construction and may be described briefly as computing devices, each of which includes a casing having mounted therein a series of denominational members in the iormof-number wheels 16 occupying differenty denominational positions and lassociated with carrying mechanism for transferring the value to the' next higher denomination when the-limitof value of a given denominationis reached, and restoring mechanisms for. restoring the carrying mechanism and for returning the number wheels to zero. The number wheels 16 are toothedl to engagea series of registering wheels 17 which register the accumulated value opposite a sight opening in the front of the register casing.

Mounted on the carriage 4 is what is known as the actuating mechanism for the computing devices or registers. This actuating mechanism includes va toothedmaster v wheel 18, adapted to mesh with successive number wheels 16 as the carriage 4 of the twpewriter advances step by step across the adding field or column. The position of the carriage et, therefore, determines the denominational relation of the register and its master wheel or actuator 18 so that when the printing point of the typewriter is 1ocated to print in: a given denominationo the column or adding field, the master wheel 18 will be engaged with the number wheel located in corresponding denominational position in the particular register appropriated to the column or adding field in which the printing mechanism is positioned to record.

The master wheel 18 is rotated upon the depression ot the numeral key T oi' the typewriter. the degree of rotation corresponding in extent to the value of the particular numeral key depressed. so that the value accumulated in a register will' correspond to the value of the digit printed by the depression of the key. This rotary movement otl the master wheel is effected by what has come to be known as differential 'mechanism interposed between4 the master. wheel and the numeral keys and embracing an actuator shaft 19 mounted in suitable bearingsv on the typewriter carriage and. a series of graduated' motion transmitting devices 2() intermediate of the shaft 19 and the several keys. lt is usual to. mount on the register bar 11 as many 'rection or the other. accordingly essi iii/.Asnierecgis-,

registers l as there are columns to e be added. inthe present disclosure are indicated four registers o o-c and d, the registers a-/ and c being used as column registers to accumulate column totals, and the register d being used for the registering of the grand total of the registers a-b and c as such grand total is recorded bythe machine. For the purpose of distinction. therefore. the registers u-b and c will be called column registers and the register Z a total register, though the register Z is not adapted to automatically accumulate the grand total but is merely caused to register the grand total when the sum is written. The purpose of this arrangement will hereafter appear.

The two-way cross-footer.

l now come to the description olf that part ot' the illustrated structure with which my present invention is more particularly concerned.

At the right hand end or' the carriage 4 is secured what may be called a grand totalizer or a two-way cross-footer 2l including a casing 2l in which is mounted a series of number wheels or denominational members 22 engaging and operating a series ot registering wheels 23 disposed opposite the sight opening 24 in the casing 21a. Associated with the number wheels 22 are two sets ot carrying levers 25 and 25a fulcruined at 26 and 2(5l in a suitable skeleton trame 2T within the casing. These carrying levers are disposed in a substantiallyY horizontal position and are urged in a. direction to carry, by motor springs 2S and L28il secured to the outer ends ot the levers and to the Jframe 2T. Pivoted to the carrying leyers directly adjacent to their inner ends are carrying pawls 29 and 29 ot angular form. as shown, having their upper ends received and guided by combs 3() and 30 iixed to the skeleton trame work 2T. The driving pawls are provided with tail pieces 3l and 31a to which are secured springs 32 and 32a. having their opposite ends secured to lugs projecting from-the under edges of the levers 25 and 25. The springs 32 and 32 maintain a proper normal relation between the carrying levers and pawls, holding the pawls in their `uidcs with their upper ends in position to engage teeth at opposite sides of the number wheels to advance or carry the wheels a single increment, in one dilS Il carrying device of one set or 'the other is tripped to effect a transfer under adding or subtracting conditions. Mounted to rock on a shaft 33 directljv under the axis of the number wheels is a single series ol' carrying or transfer trips. latches or selectors 34.. each having a pointed upper end located in a plane intermediate oiu two number wheelsto be engaged and operated by a carrying lug 35 projecting from the sides oi' one or' the adjacent wheels .The lower end of each trip 34V is curved concentric with the axis of the trip to engage two similarly curved faces 37 and 37 toi-ined at the inner ends of thecarrying levers 'and terminating in trip shoulders 38 and 38a normally spaced somewhat from the adjacent sides ot' the-trip.A Normally the trips 3ft occupy upi'ight central positions with the lower end of each engaging twojcarryiiig levers, one of eachl set, to hold springs.- If, however, the rotation of the adjacent 'number wheel causes a lug 35 thereon to engage and swing the upper end ot a trip `34, the lower end of such trip will be swung in one direction or the other by an adding or subtracting movement of the number wheel7 and the carrying lever,` thus released from the trip,- will be operated by its motor spring 25 or 25a to advance its 4pawl 29 or 29a Awhich will' engage the number wheel ot next higher or' lower order than the one which operated the trip thus advancing such number wheel one increment in one direction orthe other, accordingly as the operation is under adding or subtracting conditions. v

It is also to be noted that the carrying devices both carry and lock the number wheels so that when a wheel is advanced by ay carrying device, `overthrow of the wheel is prevented ,by the positive looking of the wheel as it reaches the limit of of a single increment of movement. It will be noticed that normally thegpawls 29 and 29a are out of interfering relation with the wheels 22, the tendency of the springs 32 and 32a to swing theIdogs toward the wheels being opposed by the fixed guides 30 and 30". By reason of the angular form olf the pawls, however, they are urged toward the wheels by their springs as soon as the carrying leverslbegin to rise. lVhen the pawl of a released carrying device has moved into engagement with a wheel and carried the same. its movement is arrested by 4 one of two stationary stop bars 30 which not only assists in urging the pawl toward the wheel but prevents the pawl from moving upward when struck by the tooth next succeeding that tooth of the number wheel with which the pawl is engaged. It will therefore appear that the carrying devices for the number wheels of the two-way' register also constitute locking devices for said wheels.

Iie transfer restoring mechanism 0f the two-way register.

.said levers in their normal or-inactive positions against the resistance of their motor vsitely extending restoring arms '41 which,

when the slides are' drawn down, engage' the substantially horizontal faces 42 of the transfer pawlsZ andgserve toretract any transfer device'of either12 series fwhich may have been operated. In'other words, the single set' of restoring slides is common to the two sets of transfer devices. Obviously, when the carrying devices are retracted they must be held in-retracted position when the restoring slides are allowed to move up. Therefore, these slides 39" are" arranged first to retract thecarrying devices proper and then to' restore to normal position any of the trips 34 whichhave been rocked to effect a carrying operation. The trips are, therefore, formed 4with oppositely eX'- tending substantially radial projections v43 which underlie trip restoring lugs-44 which are normally located a sufficient distance above the projections43'of the tripsto permit sufficient movement ofthe slides to restore the carrying devices before the'lugs 44 engage the projections 43 to reset Athe trips.v ltwill be obviousthatj by' providing each slide with two lugs 44' adapted to coact with a trip at opposite sides thereof, the trip may be rocked in eitheidirection which may be necessary tofrestore it toits normal central position.- When the restor- .ing slides are drawn .down they firstrengage and restore the `carrying devices. A slight continued movement, then effects the restoration or centering of the trips. Then when the restoring slides move' up or' back to normal position, they are followed by the'carrying` devices until the latter reach their normal positions where they are held by the restored trips during the remaining movement of the restoring slides back to normal position` Theseries of restoring slides 39 are connected for movement in unison by a transverse bar 45 from which depend a pair of links 46 connected by a rod 47 engaged at one end with the intermediate portion of a second class restoring lever 4S, fulcrumed at 49, in theregister casing, and having its reariend 50 projected through and beyond the rear Wallv of the casing to permit its actuation by mechanism mounted exteriorly ofthe two-way register, or by hand, as may be desired. The number wheels are engaged. and aligned by spring urged roller detente or locators 51, as is usual in this class of mechanisms.

The two-way master Iwheel.

The number wheels'QQ'of the'tWo-way register are engagedl by a two-Way master wheel 52 which, for convenience, may be termed the secondary master wheel to distinguish it frein theusua'i or primary master wheel 18 of the'maehiiie. The secondary master wheel 52 isimovablew'vithin the two-way register casing""acrossV the 'series of number'wheels andis'carriedbvand shiftable on al secondary actuator shaft? 53, one end of which is extended into a gear casing 54, preferably 'secured'to one side of the two-way register 21. 'Within the gear casing 54 is mounted variablegearing whereby a variable driving connection may be established between the primary actuator' shaft 19and the secondary actuator shaft 53', the purpose being to cause either corresponding rotary movements of the two actuaten-shafts-in-t-lie same direction when both master wheels are operated for addition, or corresponding rotary moverilent's offsaid'ishaft's in opposite directions when Athe master* wheels'y are operated respectively for addition and subtraction. The `ff'rrnrof gearing here shown includes a comparatively'wide'gear 55 fixed to the right handlerid 'o'fthepiimary'actuator shaft 19, a comparatively wide pinion 56 fixed to the 'left handlendioftheactuator shaft 53, and a Cmparativel'y narrow shiftable `vpinion or change' ear'57 mounted on a shortl shaft 58 and shi table" to differentfpositions, as shown inlrgure 13." In one' position the shiftable pinion- 57 constitutes a direct intermediate gear between thegear 55 and the pinion 56 establishes ad'riving connection between 'tlieprimary and secondary actuator shafts under adding -conditions'since the result of this V gearing 'will be corresponding move- `ments of' the two shafts in the same direction. ln another position, the shiftable pinion' 57'. while still engaging the gear 55 on the' primary actuator shaft, will have moved outA of mesh with the pinion 56 and into mesh with an intermediate pinion 59 mounted on a short shaft 60 and fixed to a second intermediatev pinion 61 which is at all times in mesh with the pinion 56 on the secondary actuator shaft'. -Vhen the shiftable pinion 57 is moved out of mesh with the pinion 56, a driving connection is established from the gear 55 -on'theprimary actuator shaft to the pinioii to the pinion 59 to the pinion 61 and thence to the pinion 56 on the secondary actuator shaft. This latter connection results in' corresponding rotary movements of the primary and secondary actuator shafts 19 and 53 in directions which, in the present mechanism, contemplates an adding operation of the primary master wheel and a subtracting operation of the secondary master wheel. The condition of the variable gearing between the two actuator shafts is controlled by a controlling lever 62 fulcrumed at 63 and having a roller 64 located between 'the'g'ear`57 and a: hub flange 65 thereon, to

cause the shifting of the gear 57 when the lever 62 is swung. This lever 62 is known as the subtraction lever olf the two-way register because the latter is normally organized to add and the lever, when it is desired to effect a subtracting opera-tion oli the twoway register is operated to reorganize the gearing for subtraction. The rear end ot' the lever 62 projo; ts through and beyond the rear wall ot' the gear casing 54 and is engaged by the bifurcat-ed upper end of a firstclass lever 66 ulcrumed on the back of the carriage at 6T and having its lower end connected by a link 68 to the vertically disposed arm of a bell crank lever 69. ulcrumed at 70 onthe back wall of the carriage and'provided at the rear end of its horizontal arm with a cam 71. Ordinarily. as'alreadjz stated, the subtraction lever 62 is in the adding position but when the printing point of the carriage moves opposite a column or writing field,A |the `va'lues'to be'printed inwhich'are to'be subtractedzfrom the two-way register, the cam 71 must be 'thrown ldown' toshift the lever 62 to the subtracting position and held down to maintain this condition ot the gearing during the subtracting operation. While this may be done by hand, the present invention contemplates the automatic operation of the subtracting le-ver when the carriage arrives in a predetermined position. that is to say.` when a predetermined column is reached. This may be done by mounting on a fixed partof the machine, as .for instance, onthe register bar 11. whatmaj` be called a subtracting cam 72 adjustable longitudinally of the bar to any desired point and disposed in the path ot the cam 71 as the latter advances with the carriage. Thus when the carriage reaches a predetermined position determined by the location ot the cam 72. said cam will be engaged b v the cam 7l and further movement of the carriage will cause the cam 71 to ride down under the cam 72 to shift the subtracting lever 62 to the subtracting position where it will remain until the continued advance of the. carriage carries the cam 71 past the cam 72 and permits a spring 73 to retract the bell crank 69. the subtract-ing lever 62 and the. intermediate connections to the normal adding position.

771e advancing mechanism for Hic Second/.cry

viz-ster wheel.

Normally the secondary master wheel 52 is located to the lett of the series of number wheels 22 and out of mesh therewith so that ordinaril)Y the two-way register is not operated and will remain idle while the machine is being utilized to record and `add one or more columns. When the two-way register is called intoA action. however. the secondary master wheel is advanced into engaging relation with the successive number wheels 22 by automaticall)Y operated and controlled advancing mechanism. This mechanism includes what. may be termed a master wheel carrier 74 movable within the casing of the two-way register on guide rods 75 and having at its front end a voke '7G engaging the grooved hub T'ot'the secondary master wheel to compel the carrier 7t and said master wheel to move laterally' in unisonl while permitting independent. rotar)- movement of the wheel. Tlie'rear end .ot the carrier T4 depends into engagement with a biturcated member 7S mounted at the right hand end of an upper rack bar 79 disposed horizontally in rear oi" the carriage casing and longitudinally movable through a guidi` casing80 secured to the carriage. ABelow the upper rack bar 79 is a llower rack bar Si likewise Guided in the casing 80 and these upper vani-i lower rack bars have toothed engagement with an intermediate spring urged retracting pinion 82.' rotatable on a fixed spindle 83 and urged in one direction b va spring 84, one end ot'which is secured to the hub 85 of the gear SQand the other end ot which is secured to a winding case S6 provided with a pawl Si' designed to engage a fixed ratchet 88 constituting the head ot'thc spindle 83. Normally as the. rack bars if) and 8l travel with the carriage'no advancing movement is transmitted therein7 to the sccondarv gear wheel 52 but it will be observed that it the movementfof the rack bar S1 with the. carriage is obstructed. it becomes a fixed rack upon which. during continued movement ot the carriage. the gear RQ will be caused to travel. such rotarv movement ot the pinion being necessarily transmitted to the upper rack bar T9 which will advance inst twice the distancel traveled bv tbe earriage. lt. therefore. subsequent to the arrest ofthe bar 3l the carriage. travels the dist-ance ot one letter space the secondari' master wheel will travel the distance of two letter spaces relative to a fixed point or one. lett-er space relative to the carriage. Therefore. b v arresting the rack bar 8l each movement ot' the carriage from one letter space to the next will cause the advance ot the secondary master wheel to successive number wheels 22 ot the two-wa)7 register.

Vile have already seen that the cont-rol of the two-wa)T register` with respect to the character ot its operation. is effected automaticallv bv means which comes into action at anyv predetermined point ot the carriage travel. and an analogous mechanism will now he described tor arresting the rack bar S1. at an)7 desired pointto call the two-way register into action by advancing its master wheel into operative relation with its number wheels.

At the rear end of the rack bar 81 is mounted a. T-shaped bracket 89 upon which is pivotally mounted a retarding arm 90,

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urged by a spring 91 to one limit ol its movement where it is stopped by the engagement ot a stoppin 92 with the bracket S9. it its rear end .the retarding arm 90 provided with a beak 93 and a releasing m 94. Adapted to coact with the beak 93 is a retarding stop 9:5 which, like the cam T2. is mounted on a relatively fixed part, as, for instance, the register bar l1 along which it may be variously positioned to be engaged by the beak to retard the arm 90 and the rack bar 81 when the carriage reaches that point of its travel at which it is desired that the secondary master wheel shall begin its traverse of the two-way register. Obviously, when, in the travel et' the .carri-age, the .beak 93 engages the retarding stop 95 continued movement of the carriage will .cause the pinion 82 to be advanced along the rack 8l as heretofore described, so that-as the .carriage advances to successive letter spaces, the secondary .actuator .will be. advanced to successive number wheels ol the two-way register'. incidentally this rotary movement of the pinion 82 will wind the spring 84 which, when unrestrained, will etect a reverse rotation ot the pinion to return the two racks 74 .and Sl to their normal positions and restore the secondary7 master wheel to its initial position at the lett hand side of the two-way register. Oi' course ine-ans must be provided for releasing the rctarding arm 90 from the retarding lug when the secondary master wheel has completed its traverse of the two-way register. lt is Jfor this reason that I provide the releasing cam 94 at the end ot' the arin 90, This cam is normally located a predetermined .distance from somel co-acting part movablel with the carriage. ln the present instance l utilize the shaft 96 ot the usual decimal trip arm 9T which is ordinarily found on the lllliott- Fisher machine and coacts with projections on the registers to automatically trip the carriage over decimal a nd other spaces. The shaft 9G or more. accurately the hub of the arm 9T mounted on said sha l't is so spaced trom 4the releasing cani Slt ol the rotar-.ding arm 90 that when said arm .has :been retarded. and a continued movement of the carriage has caused the secondariv master wheel to traverse the two-way register. the releasing cam will be engaged by the hun and cammed down to withdraw the beak 93 out of engagement with the retarding stop .5)5. The spring Seit. being now unrestrained will reverse the rotation ot .the pinion S2 Ythus restoring the racks T9 and Sl and the master wheel 52 @to normal position ywhere tluv rcmami-until 'the arm 9() again arrested by two-way register and will, upon the depression of' the numeral keys ot the typewriter, be .operated in one direction or the other to add or subtract accordingly as the subtracting cam 71 occupies its normal elevated position` or its .depressed position under a cam 72.

1 havepstated that the retardlng stops of the secondary. master wheel advancing mechanism and the subtracting cam 72 of the mechanism which controls the character oi operation yof the two-way register, are adjustable upon a fixed part of the machine. s a mattei' .of practice, however', the mounting and adjustment oi these elements is Yfacilitated yby disposingthem on the registers carried bythe bar 11. This for the reason that while the twoway Degister may be. operated for adding and subtracting operations without reference to any .other registers, it is. particularly contemplated to establish a .certain .relation between the operations of;v the two-way registerand the operations et' the registers on the bar l1. For this reason l have shown each et the registers a-Dfc and 0n the register bar 11 equipped with retarding .stops 95 in order .that the secondary master wheel will be causedto trarnerse the two-way register in unison .with the traverse ot each of the other registers by the primary master wheel. For the same reason I have shown the register cl equipped with the subtracting cam 'T2 lbecause. while it is designed to effect corresponding adding operations of the two-way register and each of the registers @-7) and f'. it is contemplated to effect a subtracting operation of v:the two-way register when the register f2 isLopera-ted for addition.

ln passing, attention may be directed to the fact that Asince the carriage propelling mechanism or motor 9 causes the gear S2 to travel on the retarding rack S1 and to advance the secondary master wheel 52. the advance of said wheel is accomplished by power derived from the spring drums 9 `in opposition to the retracting .drum or motor Rl. Furthermore, since the ret-arding tooth 95 is necessary to the arrest of the lower rack Sl and to the .consequent advance of the secondary master wheel,said rctarding stop constitutes variable means which. when set in the desired position, effects the automatic control ot' the master wheel advancing mechanism- Likewise this secondary master wheel advancing mechanism may 'be properly saidto be under the control vot the carriage` as also is the retracting means for the secondary master wheel, because the movement of the carriage brings 4the advancing mechanismv into action and also vetfects the release of the retarding arm 9() from the stop and causes the advancing mechanism to..be rendered ineffective while 'rendering AVAHJBLE @C ij" the retracting motor 84 effective to return the secondary master wheel to normal posi-l tion. f

The automatic restoring means.

It has been stated that the rear end 50 of the .restoring varm 48 of theftWo-Way register extends in rear lof'said register and by reference to Figure 2, it will be noted that said arm underlies a restoring' bail 98 fixed to and extended from a shaft '99 afforded' bearing in rearwardlyextending arms 100 ofthe lbrackets l13, as shown 1in Figure 2, said bail being Yco-extensive with the travel ofthe restoring arm`48, -With the carriage '4. l*Thebail 98 isI normally held in elevated 'inactive' position againstl a 'stop z101 by a spring 102 secured to one of the bracket extensions 100'and to'a short'arm 103` eX- tended from the shafty 99. Thelrestoring bail 98 is swung'down to operate thearm 48 and restoreth'e carrying 'Inechanis'in of the two-way register afterv e'a'ch traversey 'of said registerby'the tW-way'master Wheel. This restoringfof the tivo'w'ay'register may be accomplished in several `ways but the illustrated' arrangement Yincludes an electric motor in the formi'of an electromagent 104 automatically energized to "depress the f bail 98. Thearmature 105 of the magnet`104 is carried by an'arm 106 mounted "to swing from 4the'iframe ofthe machine and'connectcd by a link A107 to an arm`108 fix-ed to the' shaft 99. The' magnet :104 is carried by a bracket 109 secured to the frame of ythe ma4 chine and extended alongthe frame and in re'arfthereof is an insulating strip 110 in which are embedded three conductors 111-:

112 and 113, the Econductors'112 and 113 being preferably parallel copper strips exposed'below thein'sulation and engaged by a pair of contact'springs 114 andv 115 eX- tended from an insulating block 116 mov-- lett hand ends of the conductors'lll 'and 112,'

viewed from the rear, arey provided with binding posts 119 and 120 towvhich areconnected wires 7a, `and leading to opposite sides of the electromagnet 104. Mounted within the casing of the two-way register .is

a circuit closing device 121 comprising a contact block 122 and a contact spring 123, the latter being normally out ot contact with the block but adapted to be moved into contact therewith by a block 124 of insulating material movablel with the upper rack 79 of the secondary'master wheel advancing mechanism. From the contact spring 114. a wire y'is led to the spring 123 and another wire 7c is led from the contact spring 11,5 to the plug 112. It will obviously.' be seen fromthe diagrammatic illustration in Figure 11,'thatnormally the' circuit through the electromagnet'f104y is open but it will also be seenthat when the secondarymaster Wheel hascompleted `atravers'e of the two way registerftheiblock 124 movable therewith will operate the circuit closing device 121 to close the circuitwhich may be traced as follows: i' f Fromfthe'source of elect-ric'A supply g through the wir-e' 'e to the'conductor 111.'

thence through the' lWire't to Athey coils of the'magnet'104, thence'through the wire 'i tojthe" conduetorf112,v 'contact spring 114, wire jQspring 123,4 plug'122, wire lo. conta-ct spring 115, conductor 113 and wire f to the sourceof electrical energy. g.'

-It will'be noted that While. part of the circuitis 'mounted on the frame of the ma.- chine and part von the relatively movable carriage, it isjnevertheless, maintained in condition to become effective upon operation of thev closer 121V because ofthe sliding contact between the two springs 114and 115 movable with the carriage and thetwo long conductors 112 and 113 mounted o n the frame and of sufiicient'length 'to accommodate the carriage travel;v Obviously.l therefore. if at any'point in the travel of the carriage thetwo-way register yis brought into action, the magnet 104 will be automatically energized and thecarryin'g mechanism ot the two-way register automatically restored to normal position after each traverse of said register' by its master wheel. i

{VVhile a great variety ot operations are possible with the machineA equipped in accordance with :my invention, since a great variety of operative conditions may be afforded for the two-way register by variation in the number and relative adjustment of the subtraction cams 72 and retarding stops 95, as well as by the utilization of varying numbers of column registers occupying various relative positions` nevertheless, the arrangement shown in the drawings is illustrative of one especially'desirable mode of operation of the machine ,which maybe particularly described. It isy contemplated to use theregisters (1.-72 and c as column registersl operated in succession by .the 'primaryy master wheel ,18 to yaccumulate the totals ,of three columns of figures7 each ,column total being displayed'by the register appropriated to4 the column." The two-way .register 21 is intended to be operated in correspondence with each of the'column registers aja-Z) and c to MtJi 8 ljwllzoli' compute andl register the-grand total, tow-it, thesum .of the column totals. It is `for 'this reason that each -ofthe registers ,tr-.b and :c is provided with a retardin-g-stop 95 so that the secondary master AWheel advancing mechanism may .be causedto traverse the two-way register for :adding .operations thereof, as the primary masterqvheelftravf erses Vand operates sueeessiyecolumn regis-A ters. Hari-ng .computedthegrand total, it

is desirable to print thesame. .,SAtvt-he samev time it is desirable,toprovethat the grand total has heengproperly copied-by clearing the Itwo-way ,registergby ,asubtractingvoper. ation ,effected Slmrtltanoously avithand .as a:

direct result of the writing of thegrand total. Qrdinarily, howeventhis method .of

proving the grand total results in thegelimi-y nation .theneof from` the registemwvhereasit is desirable to .bothfprove the grandtotal and :retain the registration thereof. i .To .meet the .opposed requirements, l'provide anaddition te the three .column registeren-chaud,

c and the two-way register..21atqtal .regf istcr fcl located oppositie fthat. eldnof the writing surface in which,l thegrandftotallis copied from. the two-ivaly,2 register. When the .computation .is completed, theprimaryv master `wheel 18 passes to a position opposite the register d, whichisprovided withboth a retardingsto. .95 andzasubtracticxn cam 72, so .that whiletiieagrand total bengfcopied it will be set upin-thetotal register d, .and

simultaneously.subtracted outof the; two.

wayl :register .21, .T hns the grandtotalwill be Simultaneously written, subtractedbut of the ftwway register for proof and reregistered in Ithe.. register d.

At this point, attentionmay ybe to a .desirablerand novel .characteristic vof v the master Wheel-advancing mechanism. It

is customary in practice tofmount. on the register :bar .of an Elliott-Fisher machine, such as -ishere shown, registers of various Widths, what is known asnarrow column` work yrequirin only three or four number wheels and 0 er work requiring .a greater.

number .of wheels and consequently .wider registers. It is desirable, therefore, that the: masterv wheel .advancing mechanism of my invention,.here shown, be .so arranged that it will accommodate itselfvto registers of any width or .ofrarying widths. This requirement is metbecause 1n practice each retarding stop 95 `is, located .atza predetermined distance from the right hand side of the register, .that yis to say, from the num-- ber wheel of lowest order, regardless of the width ofthe register, and in their :normal .relation lthe releasing cami of the retarding :arm and the enacting part 96 on the carriage are separated by an interval suilicient to of the secon ary master wheel 5,2.across .the two-way register. It will be seen, however,

directed i roride for a maximum travelA that -when tlie'master wheel 52 has'traversedthe .two-way' register and .is released, its immediate retraction will carry the cam :9i away from the part 9G, thus permitting the beak 93 of the retarding arm to rise so that itwill be arrested `by the next retarding stop. Therefore, if theregister happens to be narrow, the retraction of the 'master wheel 5:21 will be' arrested before it has returned to the extreme limit of the two-way register.` On the contrary, it would be ar rested opposite that number wheel of the two-wayieg-ister which lcorresponds in denominational positionj to the number wheel ofthe -highest order of the column register. 'Ihereforagthe retractile'morement of the secondary master. Wheel `accommodates itselfj automatically to the .widthof the particular .column register` to be operated or inthe. absence-of such register, to the width off-theparticular colum-n'or field in which the numbers'areto be recorded. Notwithstanding .thisr yincomplete and variable retraction of V,theunastcr wheel 52, however, theautomatic-restoring mechanism of the two-way register .will .be operated vwith certainty .after r the accumulation of .each --number Y by .the two-way, register., becauseA while the limitwof retractile; movement of lthe master, wheel .is variablethe limit of its adxjancing movement is ytired. and i itis at this fixed limit of4 the forward movement ofthe masterwheel that the circuit'is closed to bring'the restoringmeehanism into ac- It is. believed that, jfrom .the foregoing` the constructiony and .mode vofoperation of my invention-will beclearly understood, but I reserve the right to effect .such modifications and variationsl of the illustrated structure as may fall properly within the scope of the protection. prayed. That l claim is,:- .y

.1. In .a writing adding machine. the combination with a typewriter including a carriage, lkeys and printing mechanism, of a register .operative for addition or subtractionand including a series of denominational members, a-master actuator for the register, said register and actuator being normallystationary as to relative lateral movement vduring the movement .of the carriage, means placing the master actuator under the control of the keys,- variable means automatically operated by the carriage to causerelative lateral movement of theA actuatorfand register at any prede` termined point vin the movement of the carriage, and variablemeans also brought into action automatically, at .any predetermined pointffn the vmovement of .the carriage to determinethe character of operation of the register. l A

2. 'In a writing adding machine, the combination with a typewriter including a carriage, keys and printing mechanism, ot a register-,carried by and movable with the carriage and operative for addition or subtraction, a master actuatorl also carried by the carriage and adapted to operate said register for addition or subtraction under the control of the keys, said register and actuator being stationary as to relative lateral movement during the travel of the carriage, means brought into action by the travel of the carriage to cause the traverse of the register by the master actuator, and automatic means also brought into action by the movement of the carriage to determine Whether the register shall operate for addition orl subtraction.

3. in a Writing adding machine, the combination ivith a carriage, keys and printing mechanism, of a register movable with the carriage and operative for addition or subtraction, register operating means also movable vvith the carriage and under the control of the keys, and means brought into action automatically by the movement of the carriage to determine whether the register shall be operated for addition or subtraction.

et. In a writing adding machine, the combination with a carriage, keys and printing mechanism, oi a register and actuating means therefor, both movable with the carriage and under the control of the keys, said register and its actuating means being normally stationary as to relative lateral movement during the travel of the carriage, variable means brought into action by the travel of the carriage at any desired point in its movement to cause relative lateral movement of the register and its actuating means, and means also brought into action by the movement of ythe carriage to determine whether the register shall operate for addition or subtraction.

5. ln ay writing adding machine, the combination with a traveling carriage, recording n'ieclianism and keys movable with the carriage, oi a two-way register also movable with the carriage. a master actuator movable with the carriage and under the control of the keys, and means operative automatically at a predetermined point in the carriage travel to control the direction ot operative movement of the master actuator.

3. ln a writing adding machine. the combination with a carriage, keys and printing mechanism. of a two-Way register movable with the carriage. a master actuator operative in opposite directions under the control o't the keys and normally operative for addition, variable means for causing the master actuator to begin its traverse of the register at any predetermined point in the movement of the carriage, and variable means for causing the master actuator to operate tor subtraction when operated With the carriage in given positions.

7. In a Writing adding machine, the combination with a carriage, keys and printing mechanism, or` a register movable with the carriage, a master actuator alsomovable With the carriage and under'the .control of thekeys, and mechanism' for causing the master actuator to advance across the register, said advancing mechanism comprising tvvo relatively movable members-mounted on the carriage, one'v ot said members .being connected to the actuator and the other adapted for retardation with respect to its travel .vith the carriage, variable Ameans for retarding said last named member at a given point in the travel of the carriage, and means coacting rWith said' two. relatively movable members to compel theirrelative movement and the consequent advance of the actuator when one of the membersis retarded. 1 y

8. In a Writing adding machine,lthe combination with a carriage, keys and printing .mechanism, of a register movable with the carriage, a master actuator operative under the control of the keys and adaptedo traverse the register, advancing or traversing means for the actuator comprising a pair ot reciprocatory racks and an intermediate pinion lnormallymovable with the carriage and stationary relative to each other, a connection betWeencne of the racks and the actuator, and means fory arresting the movement of the other rack While the carriage continues its travel.

9. In a Writing adding machine, the commech'anism, of a register movable With the carriage, a master actuator for the register, said actuator being under the control of the keys and movable back and forth across the register, a pair of reciprocatory racks bination vvith a carriage, keys and printingmechanism, of a register movable with the carriage, a master actuator for the register, said actuator being under the control of the keys, actuator advancing mechanism including a pair of racks, an intermediate coacting pinion mounted on the carriage, means for holding one of the racks stationary relative to the carriage to cause the advance of the actuator across the register, and means for releasing the arrested rack.

l1. ln a Writing adding machine, the combination with a carriage, keys and printing mechanism, of a register movable ivith the carriage, a master actuator for the register. said actuator being under the control ot `1,00 bination with a carriage, keysand printing 

